Apr 2016. China, the United States, and Central/South America account for the vast majority of the world consumption of nonprotein nitrogen in animal feeds, together accounting for just over 92% of world NPN consumption in 2015.

Apr 2016. China, the United States, and Central/South America account for the vast majority of the world consumption of nonprotein nitrogen in animal feeds, together accounting for just over 92% of world NPN consumption in 2015.